Gas valves



nd.. @4,1958 l g. @LAMAR TAL i 52,855,957.

GAS VALVES L Original FiiedMarch 18, 1952 y 2 Sheekfs--Sheei'l AVl Magid' I Oct. 14, 1958` l c. c. LAMAR ET'AL 2,855,957

`GAS VALVESk K. I v original Filed March 123,l 1952 y sheet'sshet Y 5 76 @g'g 38 ya @kfw/2442777. /ze @ga/k2' fm@ wwf@ United States Patent O GAS VALVES Charles C. Lamar and Norman M. Hulf, Chicago, and Frank H. Bergquist, Morton, lll., assignors, by mesne assignments, to Harper-Wyman Company, Chicago, Ill., a corporation of Illinois Continuation of application Serial No. 277,218, March 18, 1952. This application August 11, 1954, Serial No. 449,042

5 Claims. (Cl. IS7-625.32)

The present invention relates to gas valves and particularly so-called double gas valves, i. e., valves used with gas burners each having two burner sections and wherein the double valve controls the supply of gas to both sections. Burners of this type are called double burners and one of the burner sections is generally called the main burner and the other the simmer burner. The present application is a continuation of our application Serial No. 277,218, tiled March 18, 1952, since abandoned.

Double gas valves of the prior art have been designed and constructed to provide desirable operating conditions. Among these are a regulatable supply of gas to both burners, a large quantity of gas to the simmer burner only, a regulatable supply of gas to the simmer burner only, and a predetermined low quantity of gas to the simmer burner only, in addition to an olf position. Gas valves providing these operating conditions have heretofore been considerably larger than single valves and bothV the valve body and the rotatable valve element or valveplug have been larger.

The primary object of the present invention is to provide a new and improved double valve providing the various operating conditions mentioned above and which can be constructed with a minimum of material. Y The material generally used in the construction of gas valves is brass and it has been found that the present invention provides a saving of approximately 35% of the brass heretofore used in double valves providing the same operating conditions. The valve not only provides the desired operating conditions but these are provided with but 180 rotation of the valve plug and effective sealing is provided in allpositions.

In brief, the valve of the present invention may take various forms and as disclosed herein it includes a valve body having an inlet passageway and a main burner outlet passageway angularly spaced from it and which may be coplanar with it. The valve body includes also what may be called a full simmer outlet passageway angularly spaced from the other passageways and also axially spaced at least from the inlet passageway. Within the valve chamber is mounted a rotatable tapered valve plug having an axial passageway and transverse passageways or ports aligned with the inlet passageway and both the main and simmer, burner outlet passageways in the full on position of the valve plug. The valve includes further a combined low simmer and carry-over passageway dening means having an oriiice effectively at the outlet of the axial passageway and arranged to supply gas to the simmer burner outlet passageway in various operative positions of the valve, and which may be arranged to do so continuously as by a continuous connection to the axial passageway in the plug. The valve plug includes a further transverse passageway that is axially spaced from the inlet passageway toward the smaller end of the plug and which is angularly as well as axially so located as to be aligned with the simmer burner outlet lpassageway in the full simmer position of the valve. The main and simmer outlet passageways have transverse Mice portions opening into the plug receiving chamber and located as in a generally horizontal plane and thus opening into the chamber angularly at substantially opposite points. The inlet passageway is located angularly substantially intermediate the two outlet passageways, as for example in a generally vertical plane. The various ypassageways are so located and dimensioned that gas at substantially line pressure is supplied from the inlet to the axial passageway in the plug in all the operative positions, that throttling takes place at the outlet passageways rather than at the inlet, that in the turndown of both burner sections the simmer is turned down to a minimum before the main section is turned off, and so that there is an adequate and eifective sealing in the off position. The location of the simmer burner passageways in the plug is such that none of them registers with the gas inlet or main burner outlet passageways in any operative position of the plug. The low simmer and carry-over passageway defining means with its orifice is effective at the low turn-down of gas to both burner sections and in the low simmer position to provide a low supply of gas to the simmer burner to insure maintenance of llame thereat. The valve is also so constructed as to be operable sequentially in one direction from the full on position through a turn-down range of both sections to a full simmer position, and from the full simmer position through a turn-down range of only the simmer section to a low simmer position from which the valve can be operated in the same direction to an off position with a gradual decrease in the ow of gas even below the low simmer flow.

The arrangement and construction is such that the plug `is of a size ordinarily used in single valves and yet there isadequate sealing provided to prevent Hare-up of gas ow or creation of sneak gas circuits in any of the valve vpositions and which also enables the valve to be moved into its various operating positions in but 180 rotation of the valve plug.

Other objects and advantages of the present invention will become apparent from the ensuing description of an illustrative embodiment thereof, in the course of which reference is had to the accompanying drawings, in which:

Fig. 1 is a full scale top plan View of a valve constructed in accordance with the invention;

Fig. 2 is a full scale side elevational view of the valve;

Fig. 3 is a full scale end view looking at the valve from the stem end; e

Fig. 4 is an enlarged top plan view partly in axial section and with the valve in its full on position;

Fig. 5 is a transverse cross sectional view taken along the broken line 5-5 of Fig. 4, also with the valve in its full on position; l

Fig. 6 is a conical layout of the plug chamber and plug with the valve in its full on position; and

Figs. 7, 8 and 9 are views similar to Fig. 6 illustrating a conical inner surface 36 within which is mounted a movable control member illustrated as a tapered or conical valve plug 3S. The valve contains certain features threaded boss 42 utilized in securing the valve to the manifold. The inlet passageway 1 is radial relative to the longitudinal axis of the valve plug and the chamber and is located in a generally vertical plane. The body is also provided with radial outlet passageway portions 2 and 3 located in a generally horizontal plane and spaced about 90 in opposite angular directions from the inlet passageway and through which gas is supplied to the main and simmer burners, respectively. Passageway, 2 communicates with an axially extending main burner outlet passageway 44 formed in the valve body at one side of the plug and terminating in an externally threaded boss 46 to which is secured an adjustable hood 48 which predetermines the maximum quantity of gas supplied in the full on position to the main burner section, not shown. `Passageway 3 communicates with a somewhat smaller and generally axially extending passageway portion 50 in the valve body which in turn communicates with an axially extending simmer burner outlet passageway 52 formed in an externally threaded boss 54 at the other side of the plug and at the end of which is mounted an adjustable hood 56 which predetermines the maximum quantity of gas supplied to the simmer burner section, not shown, in both the full on and full simmer positions. All of the passageways mentioned can be readily formed as by drilling the valve body. The passageways 2 and 3 can be drilled from the outside of the valve body after which the outer ends can be readily closed as by the plugs 58. These passageways and passageway 1 can also be drilled at the same time as the hereinafter referred to passageways 11, 12 and 13 in the valve plug.

The valve includes means delining a passageway with a flow restricting orifice therein cooperating with an axial passageway in the plug for connecting the inlet passageway 1 to the simmer outlet passageway in the operative positions of the plug to insure maintenance of the ame at the simmer burner section. This means is illustrated as including a further passageway 60 providing communication between the axial plug passageway through chamber 34 and the simmer burner outlet passageway 52. Passageway 60 is provided with a cup-like insert 62 having a small orifice 64 which is utilized to predetermine the quantity of gas supplied to the simmer burner section in the low simmer position of the valve and in the transition from main and simmer section operation to simmer section only operation.

The valve plug is also provided with four radial passageways 11, 12, 13 and 14 opening into the axial passageway 10 in the valve plug and of which, as best illustrated in Figs. 4 and 5, the passageways 11, 12 and 13 are aligned with the passageways 1, 2 and 3 in the valve body in the full on position of the valve plug.

In accordance with one of the features of the present invention, the simmer outlet passageways 3, 13 and 14 are axially spaced toward the smaller end of the plug from the inlet passageway 1 so that there can be no registry of any of this set with the inlet passageway and the arrangement is furthermore such that in the operative positions of the valve there are no sneak gas circuits and flare-ups of gas ow. Also, passageway 14 registers with simmer outlet passageway 3, as will be noted in greater detail hereinafter, in the full simmer position, in which position passageway 12 registers with the inlet passageway 1.

As noted above, the axial passageway 10 in the valve plug is connected to the inlet passageway 1 in the operative positions of the valve plug. Accordingly, gas is supplied to the axial passage at line pressure and throttling occurs at the outlets and the gas supply to the simmer burner outlet through orifice 64 is definite and predeterminable to maintain ignition of the simmer burner section. As illustrated, passageway 1 is of the same size as passage 11, e. g., about .204 inch in diameter, whereas passageways 2 and 12 and 3 and^13 are smaller. Passageways Z and 12 may have a diameter of. about .193 inch and 3 and 13 a diameter of about .125 inch so that, as shown. the simmer ow is turned down to its minimum as determined by the orifice 64 before the main on double turn-down. Passageway 14 may be somewhat smaller than passageway 13, as of about .093 inch diameter, to provide a slightly more rapid turn-down of only the simmer in going from full to low simmer. The plug has a conventional ,taper of two inches per foot, but is otherwise comparable in size to a single valve plug and has a length of 1li/1G inch, a diameter of about .361 inch at its smaller end and thus of about .436 but not more than about .465 inch at the plane of the inlet passageway (as compared with a minimum of about .543 inch on prior double valves) and the inlet passageway is sealed by a bearing surface between the plug and body of at least .110 (%4) inch, measured in any direction.

The valve plug is movable between its various positions in suitable manner as by a valve stem 66 having a at 68 on one side. A handle can be readily secured to the valve stem. The flat faces upwardly in the full on position of the valve and inasmuch as the valve plug is rotatable through but 180 the at faces down in the off position illustrated in Figs. l, 2 and 3.

The various positions of the valve may be indicated to the user in desired manner by position indicating and determining means. The means illustrated herein will not be described in detail but it is of a character disclosed and claimed in the copending application of Philip S. Harper, Serial No. 544,484, filed November 2, 1955, which is a continuation of application Serial No. 162,446, led May 17, 1950, since abandoned. The means includes a full on and ot position determining and indicating washer 70 having a radial projection 72, see Fig. l, engageable with a first shoulder 74 on the valve body iu the off position and with another shoulder 75 in the full on position. The washer 76 encircles the valve stem 66 and rotates with it. .Tt is biased against a housing 76 by a spring 77, see Fig. 4, which also maintains the valve plug seated. Additional intermediate position indicating mechanism is located within the housing 76. The housing consists of a cup shaped element 78 and an end cap 30 through which the valve stem projects. The housing is held in assembled relation relative to the valve body by the securing screws 32. Within the housing is located a washer 84 also rotating with the valve stem and a spring element 86 cooperating with the washer for position indication.

As hereinbefore indicated, the valve is operable into a plurality of positions indicated particularly in Figs. 6, 7, 8 and 9 and other positions wherein regulatable quantities of gas are supplied to both the main and simmer burner sections and to the simmer section only. The indicated positions are a full on position, a full simmer only position, a low simmer only position and an on" position; the other positions being described hereinafter. In the noted figures the positions of the valve plug relative to the body are indicated by the arrow 90 and indicated angles.

In the full on position, maximum quantities of gas are supplied to both the main and simmer burner sec-- tions. ln this position, the inlet passageway 1 is in full registry with passageway 11 so that gas is supplied to the axial passageway 10 and from the latter through the main and simmer burner outlet passageways 2, 44 and 3, 50, 52 to the main and simmer burner sections, respectively. Some gas is at the same time supplied through the orice 64 but this is only a small quantity.

When the valve is turned in one direction from its full on position to the full simmer position a decreased and regulatable quantity of gas is supplied to the two burner sections, the throttling taking place at the outlet passageways rather than at the inlet. This throttling at the outlet occurs because of gradual closure of the main and simmer outlet passageway portions' 12 and 13 upon rotation of the plug during which there is continued ow of gas from the inlet to the axial passageway in the plug. The simmer flow through passageway 13 is shut oi before the ow to the main because passageways 3 and 13 are smaller than passageways 2 and 12.

In going from the full on position of Fig. 6 to the full simmer position of Fig. 7, passageway 11 moves out of registry with the inlet passageway 1 but before it does so the passageway 12 begins to register with the passageway 1 so that a continuous supply of gas is furnished to the passageway 10 where it is available, throughout turning down and ott of the radial main and simmer passageways, to the simmer burner section through valve chamber 34, passageway 60, and the orifice 64. The supply through orice 64 at this time may be considered as providing a carry-over supply insuring maintenance of ignition at the simmer burner section when going from the low end of the turn-down range of gas to both burner sections, to the full of the simmer burner section only.

In the full simmer position indicated in Fig. 7, the passageway 12 in the plug is in registry with the inlet passageway 1 and the passageway 14 in the valve plug isl in registry with the simmer burner outlet passageway 3. Accordingly, a maximum amount of gas is again supplied to the simmer burner but only to the simmer burner. Here again, a small quantity of gas is supplied through an orifice 64.

' The supply of gas to the simmer burner alone can also be regulated from the maximum flow to the minimum determined by the size of the on'ce 64. This regulation is eected by throttling occurring between the outlet passageway 3 and passageway 14 in the valve plug as the valve plug is moved the one direction from the position of Fig. 7 to the position of Fig. 8.

The low simmer position is indicated in Fig. 8. From this it will be noted that the simmer burner outlet passageway 3 is closed but that gas flows to the simmer burner through the passageway 60 and orice 64 in the insert 62, the gas enter-ing the axial passageway 10 in the valve plug through partial registry of inlet passageway 1 and the passageway 12 in the valve plug.

In the off position illustratedin Fig. 9 the inlet passageway 1 is closed by the valve plug. This position is reached -by turning the valve plug in the above mentioned one direction from its low simmer position. During this movement the ow of gas to the simmer burner is gradually cut ofi and in the oil position the inlet passageway is closed by the valve plug and by a portion of the plug providing a very elective seal, as shown in Fig. 9, and one adequately meeting A. G. A. requirements.

From the foregoing detailed description of the present invention it may be noted that the valve is simple to construct and provides the desired operating conditions of a double valve. Furthermore, the arrangement is such that a desirable sequence of operation with small angular movement is obtained. Also, good sealing takes place all the time and there are no sneak gas circuits which might cause ilare-up by reason of undesired supply of gas to any of .the burners. Furthermore, the valve is n0- tably small and results in a considerable saving in material.

While the present invention has been described-in connection with the details of a particular embodiment thereof, it should be understood that these details are not intended to be limitative of the invention except insofar as set forth in the accompanying claims.

Having thus described our invention, what we claim as new and desire to be secured by Letters Patent of the yUnited States is:

- l. A double gas valve for a double burner comprising main and simmer burner sections, including a valve body having a chamber, a gas inlet passageway leading to said chamber, main and simmer burner gas outlet passageways leading from said chamber, a valve plug mounted in said chamber having a rst passageway aligned with said inlet passageway and second and third passageways aligned with said main and simmer outlet passageways in a full on position of the valve, said valve plug including also an open ended axial passageway communicating with the three mentioned passageways in the plug and including also a fourth transverse passageway in coplanar relation with said third passageway in the plug and said simmer burner outlet passageway, said inlet, main burner outlet, and first and second plug passageways being in coplanar relation and axially displaced from the other coplanar passageways so that the two coplanar sets of passageways do not register in any position of the plug, the open.y end of said axial passageway in the plug opening into said chamber and said body having a passageway with a ow restricting oriiice therein connecting said chamber to said simmer outlet passageway, the angular spacing and dimensions of said passageways in the body and plug being such that the valve plug is operable from its full on position through a turn-down range of both burner sections to a full simmer position wherein the fourth transverse passageway in the plug is in registry with the simmer burner outlet passageway and said second passageway in the plug is in registry with the inlet passageway and the main burner outlet passageway is closed, and so that the plug is movable from said full simmer position through a turn-down range of the simmer burner section only into a low simmer position wherein both the main andsimmer burner outlet passageways are closed at the plug and a low quantity of gas is supplied to the simmer burner outlet passageway only through said axial passageway and orifice.

2. A double gas valve for a double 'burner comprising main and simmer burner sections, including a valve body having a chamber, a gas inlet passageway leading to said chamber, main and simmer burner gas outlet passageways leading from said chamber, a valve plug mounted in said chamber having a rst passageway aligned with said inlet passageway and second and third passageways aligned with said main and simmer outlet passageways in a full on position of the valve, said valve plug including also an axial passageway communicating with the three mentioned passageways in the plug and including a fourth transverse passageway in coplanar relation with said third passageway in the plug and said simmer burner outlet passageway, said inlet, main burner outlet, and first and second plug passageways being in coplanar relation and axially displaced from the other coplanar passageways so that the two coplanar sets of passageways do not register in any position of the plug, means including said axial passageway dening a passageway with a ow restricting orice therein for connecting said inlet passageway to said simmer outlet passageway in the operative positions of the Valve, the angular spacing and dimensions of said passageways in the body and plug being such that the valve plug is operable from its full on position through a turndown range of both burner sections to a full simmer position wherein the fourth transverse passageway in the plug is in registry with the simmer burner outlet passageway and said second passageway in the plug is in registry with the inlet passageway and the main burner outlet passageway is closed, and so that the plug is movable from said full simmer position through a turn-down range of the simmer burner section only into a low simmer position wherein both the main and simmer burner outlet passageways are closed at the plug and a low quantity of gas is supplied to the simmer burner outlet passageway only through said passageway defining means including said axial passageway and orifice,

3. A double gas valve for a double burner comprising main and simmer burner sections, including a valve body having a chamber, a gas inlet passageway leading to said chamber, main and simmer burner gas outlet passageways leading from said chamber, a valve plug mounted in said chamber, said plug having a plurality of transverse passageways of which certain are aligned with said inlet passageway and said main and simmer outlet passageways in al full on positionof the valve, said valve plugtincluding ,also Aan axial passageway communicating with said transverse passageways in the plug and including a further transverse passageway in coplanar relation with said simmer burner outlet passagewayv and angularly spaced from the said transverse passageway aligned with the simmer outlet passageway in the full on'position, said simmer burner outlet passageway, said further transverse passageway and the said transverse passageway aligned with said simmer outlet passageway in the full en position beingaxially displaced from the inlet, main outlet and other transverse passageways in the plug so that there can be no registry between them, means including said axial passageway defining a passageway with a flow restricting orifice therein for connecting said inlet passageway to said simmer outlet passageway in the operative positions of the valve, the angular spacing and dimensions of said transverse passageways in the plug and the passageways in the body being such that the valve plug is operable from its full on position through a turn-down range of both burner sections to a full simmer position wherein the further transverse passageway in the plug is in registry with the simmer burner outlet passageway and one of said transverse passageways in the plug is in registry with the inlet passageway and the main burner outlet passageway is closed, and so that the plug is movable from said full simmer position through a turn-down range of the simmer burner section only into a low simmer position wherein both theimain and simmer burner outlet passageways are closed at the plug and a low quantity of gas is supplied to the simmer burner outlet passageway only through Saidpassageway defining means including said axial passageway and orice.

4. A double gas valve for a double burner comprising main and simmer burner sections, including a valve body having a tapered chamber, a gas inlet passageway leading to said chamber, main and simmer burner gas outlet passageways leading from said chamber, a tapered valve plug rotatably mounted in said chamber for movement from an off to various operative positions and having passageway defining means including passageways aligned with said inlet passageway and with said main and simmer outlet passageways in a full on position of the valve, said valve plug including also an open ended axial passageway communicating with the said mentioned passageways in the plug and including also a further transverse passageway angularly spaced from the said passageway aligned with said simmer outlet passageway and coplanar with the latter and the simmer burner outlet passageway, said further and simmer burner outlet passageways being in a plane axially spaced from said inlet passageway toward the smaller end of the tapered plug so that said further passageway doesnot come into registry with said inlet passageway, means defining a passageway with a iiow restricting orifice therein continuously connecting the open end of said axial passageway to said simmer outlet passageway in the operative positions of the valve plug, the spacing and dimensions of said passageways in the body and plug being such that the valve plug `is rotatable in one direction from its full on position through a turn-down range of both burner sections to a low turndown position wherein the main and simmer` burner outlet passageways are closed at the plug and a low quantity of gas is supplied to the simmer burneroutlet passageway only throughsaid axial passageway and orifice, and on further rotation in said one direction to a full simmer position wherein the said further transverse passageway in the plug is in registry with the simmer burner outlet passageway and said passageway defining means in the plug is in communication with the inlet passageway and the main burner outlet passageway is closed, so that upon still further rotation in said one direction the plug 1s movable from said full simmer position through, a turndown range of thesimmer only into a low simmer 'position whereinboth the main and simmer burner outlet passageways are closed at the plug anda -*low quantity of gas is supplied to thesimmer burnerl outlet passageway only through said axial passageway and oriiice', and sothat upon further rotation in said one direction the plug is movable to an off position wherein said inlet passageway is closed. n

5. A double gas valve for a double burner comprising; 'iin and simmer burner sections, including a valve body nai/ing a tapered chamber, a gas inlet passageway leading to said chamber, main and simmer burner gas outlet passageways having transverse portions leading from said chamber, said portions opening into said chamber at angularly opposite points, said inlet passageway beingl intermediate them, and said simmer burner outlet transverse portion being axially spaced from said inlet passageway toward the smaller end of said chamber, a tapered valve `lug rotatably mounted in said chamber for movement from an off to various operative positionsrand having an axial passageway and transversely extending passageway defining means and a further transverse passageway coplanar with said portion of the simmer outlet passageway so that it does not come into registry with said inlet passageway, means including a passageway with a ow restricting orifice therein, said transversely extending passageway defining means and said axial passageway for connecting the inlet passageway to said simmer outlet passageway in the operative positions of the valve, said valve plug having a full on position wherein said main and simmer burner outlet passageways are connected to the inlet passageway through said passageway defining means, the spacing and dimensions of said passageways in the body and plug being such that the valve plug is rotatable in one direction from its full on position through a turn-down range of both sections to a low turn-down position wherein the main and simmer burner outlet passageways are closed at the plug and a low quantity of gas is supplied to the simmer burner outlet passageway only through passageways including said axial passageway and orifice, and on further rotation in said one direction to a full simmer position wherein the said further transverse passageway in the plug is in registry with the simmer burner outlet passageway and said axial passageway in the plug is in communication with the inlet passageway through said transversely extending passageway defining means and the main burner outlet passageway is closed, and so that upon still further rotation in said one direction the plug is movable from said full simmer position through a turn-down range of the simmer only into a low simmer position wherein both the main and simmer burner outlet passageways are closed at the plug and a low quantity of gas is supplied to the simmer burner outlet passageway only through passageways including the axial passageway and orifice, the said axial passageway in the plug being connected to the inlet pasageway through said transversely extending passageway defining means in the operative positions of the plug whereby a definite minimum gas iiow is supplied through the orifice to the simmer burner outlet passageway to maintain ignition of the simmer burner section of the double burner, and said plug being further rotatable in said one direction from said low simmer position to an ot position wherein said inlet passageway is closed.

References Cited in the file of this patent UNITED STATES PATENTS 2,286,766 Sherman June 16, 1942 2,299,624 Harper Oct. 20, 1942 2,770,253 Lamar Nov. 13, 1956 

